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DragonflyTV Previous Broadcasts

Self Assembly/Bone Regrowth (Episode #705Z)

PBS Kids: Wed, May 29, 2013 -- 4:00 PM

Self Assembly - Keely and Connor learn about self-assembly at the Children's Museum of Houston. The museum staff suggest they visit Rice University, where scientists use self-assembly to make things at the nanoscale. At Rice, a scientist helps the kids use self-assembly to make and "pop" microcapsules. The kids then try out a similar technique at home, encapsulating chocolate sauce, mint and other flavors in alginate beads to serve on ice cream. Bone Regrowth - Kobel, Nathan, and Adam go to the Oregon Museum of Science and Industry (OMSI), where they learn that scientists are using nanotechnology to help regenerate nerves and bones. A scientist from Brown University explains that a solution of nanotubes and minerals is injected into the fracture and forms a scaffold to encourage bone regrowth. The kids want to know why both ingredients are needed to repair the bone. They try solutions with different amounts of each ingredient on sponges and test how much weight each treated sponge can support.

Repeat Broadcasts:

  • PBS Kids: Thu, May 30, 2013 -- 4:30 AM
  • PBS Kids: Wed, May 29, 2013 -- 10:30 PM

Phoenix & Tucson (Episode #506)

PBS Kids: Tue, May 28, 2013 -- 4:00 PM

Alexandra and Anna learn about construction techniques at the Arizona Science Center's "Many Hands Make a Home" exhibit, trying out what they learn on a house for their dog, Rupert. Home Prickly Home: Alex and Mark head to the Arizona-Sonora Desert Museum to see which creatures make the Saguaro cactus home. And DFTV learns how Chase Field-the only sports facility in world that has a retractable roof, air conditioning, and natural turf-keeps its grass green and growing.

Repeat Broadcasts:

  • PBS Kids: Wed, May 29, 2013 -- 4:30 AM
  • PBS Kids: Tue, May 28, 2013 -- 10:30 PM

Science at Play (Episode #407)

PBS Kids: Mon, May 27, 2013 -- 4:00 PM

Francheska, Marnika and Precious get roped into a Double Dutch investigation. Maddy and Martina use clowns, juggling and science to demonstrate how unreliable human perception can be. And Dragonfly TV asks: How can you clock a whizzing baseball's speed without a radar gun?

Repeat Broadcasts:

  • PBS Kids: Tue, May 28, 2013 -- 4:30 AM
  • PBS Kids: Mon, May 27, 2013 -- 10:30 PM

Canines (Episode #406)

PBS Kids: Sat, May 25, 2013 -- 4:00 PM

Who's afraid of the big, bad wolf? Not Zachary and Jerit, who explore pack behavior to determine the "top dog." Canine conundrum: Alexa, Miriah and Janaya investigate which sled dog should lead the pack to victory. And Dragonfly TV asks: How can you keep your pooch from being a "hot dog?"

Repeat Broadcasts:

  • PBS Kids: Mon, May 27, 2013 -- 4:30 AM
  • PBS Kids: Sun, May 26, 2013 -- 10:30 PM
  • PBS Kids: Sun, May 26, 2013 -- 4:00 PM
  • PBS Kids: Sun, May 26, 2013 -- 4:30 AM
  • PBS Kids: Sat, May 25, 2013 -- 10:30 PM

Gecko Feet/Nasturtium Leaves (Episode #704Z)

PBS Kids: Wed, May 22, 2013 -- 4:00 PM

Gecko Feet - Jennifer and Nooshin like rock climbing. They wonder how some lizards can climb rocks so easily. They visit the Lawrence Hall of Science in Berkeley and compare the climbing ability of different lizards. They notice that the best climbers are geckos. They visit a lab at the University of California Berkeley to find out why, learning that special, nanoscale hairs on gecko feet are the secret to their amazing climbing abilities. Nasturtium Leaves - Jasmine and Melinda wonder why water beads up on some plants and not others. They head to San Francisco's Exploratorium, where they learn that surfaces at the nanoscale aren't always smooth, and that nano hairs on nasturtium leaves cause them to be water repellent. The girls collect other plants with hairy leaves and test their ability to repel water. They take some samples to Stanford University for up-closing imaging and compare the structure of nasturtium leaves to water-resistant fabric.

Repeat Broadcasts:

  • PBS Kids: Thu, May 23, 2013 -- 4:30 AM
  • PBS Kids: Wed, May 22, 2013 -- 10:30 PM

Sports Science (Episode #302Z)

PBS Kids: Tue, May 21, 2013 -- 4:00 PM

Tess, Christina and Alison employ slapshot science to reach their " goal" of finding the most powerful hockey stick. Garrett, Carl and John grab their boots, poles and swimsuits for an afternoon of ski jumping. Crash test smarties: engineers Mike Lowe and Brian Sidwell design kids' bike helmets for optimum safety, durability and style.

Repeat Broadcasts:

  • PBS Kids: Wed, May 22, 2013 -- 4:30 AM
  • PBS Kids: Tue, May 21, 2013 -- 10:30 PM

Canines (Episode #406)

PBS Kids: Mon, May 20, 2013 -- 4:00 PM

Who's afraid of the big, bad wolf? Not Zachary and Jerit, who explore pack behavior to determine the "top dog." Canine conundrum: Alexa, Miriah and Janaya investigate which sled dog should lead the pack to victory. And Dragonfly TV asks: How can you keep your pooch from being a "hot dog?"

Repeat Broadcasts:

  • PBS Kids: Mon, May 27, 2013 -- 4:30 AM
  • PBS Kids: Sun, May 26, 2013 -- 10:30 PM
  • PBS Kids: Sun, May 26, 2013 -- 4:00 PM
  • PBS Kids: Sun, May 26, 2013 -- 4:30 AM
  • PBS Kids: Sat, May 25, 2013 -- 10:30 PM
  • PBS Kids: Tue, May 21, 2013 -- 4:30 AM
  • PBS Kids: Mon, May 20, 2013 -- 10:30 PM

Sound (Episode #405)

PBS Kids: Sat, May 18, 2013 -- 4:00 PM

Brittney and Maggie explore communication using the bumpin' backdrop of a volleyball game. Tarissa and Sabrina pump up the volume, grabbing a decibel meter to monitor the sometimes dangerous sounds in their favorite New York City hang-outs. And Dragonfly TV asks: How can you turn sheet music without using your hands?

Repeat Broadcasts:

  • PBS Kids: Mon, May 20, 2013 -- 4:30 AM
  • PBS Kids: Sun, May 19, 2013 -- 10:30 PM
  • PBS Kids: Sun, May 19, 2013 -- 4:00 PM
  • PBS Kids: Sun, May 19, 2013 -- 4:30 AM
  • PBS Kids: Sat, May 18, 2013 -- 10:30 PM

Surface Area/Stained Glass (Episode #703Z)

PBS Kids: Wed, May 15, 2013 -- 4:00 PM

Surface Area - After discovering that ordinary flour dust can be explosive, Lara and Anushua explore the importance of surface to area to volume ratio at the Science Museum of Minnesota. They conduct soda explosion experiments in the museum's Big Back Yard, investigating how surface area affects reactions. Finally, they visit the University of Minnesota where they learn how scientists are developing more affordable solar cells with nanotechnology that increases the cells' surface area. Stained Glass - Alettie and Yvonne visit the Glass Experience exhibit at the Museum of Science and Industry in Chicago and learn that nanoparticles are responsible for the colors in some medieval stained glass. The girls are surprised to learn that nanogold makes glass red! They go to Northwestern University to explore the relationship between size and color of nanoparticles. They create different sizes of gold and silver nanoparticles to produce a variety of colors, which they use to make their own works of art.

Repeat Broadcasts:

  • PBS Kids: Thu, May 16, 2013 -- 4:30 AM
  • PBS Kids: Wed, May 15, 2013 -- 10:30 PM

Minneapolis & Saint Paul (Episode #504)

PBS Kids: Tue, May 14, 2013 -- 4:00 PM

Inspired by the IMAX movie Stomp, Maxine and Hannah create their own musical instruments at the Science Museum of Minnesota. Rylee, who uses a myoelectric prosthetic arm, heads to The Bakken Museum to explore how the electrical signals in her body help her arm function. And, in the Grossest Segment Ever!, Paige and Nick check out the "Animal Grossology" exhibit at the Science Museum of Minnesota before investigating how animals depend on their sense of smell at the Minnesota Zoo. In the Science Secret, find out what happens when you fill the Mall of America, one of world's largest shopping malls, with almost 40 million visitors each year.

Repeat Broadcasts:

  • PBS Kids: Wed, May 15, 2013 -- 4:30 AM
  • PBS Kids: Tue, May 14, 2013 -- 10:30 PM

Sound (Episode #405)

PBS Kids: Mon, May 13, 2013 -- 4:00 PM

Brittney and Maggie explore communication using the bumpin' backdrop of a volleyball game. Tarissa and Sabrina pump up the volume, grabbing a decibel meter to monitor the sometimes dangerous sounds in their favorite New York City hang-outs. And Dragonfly TV asks: How can you turn sheet music without using your hands?

Repeat Broadcasts:

  • PBS Kids: Mon, May 20, 2013 -- 4:30 AM
  • PBS Kids: Sun, May 19, 2013 -- 10:30 PM
  • PBS Kids: Sun, May 19, 2013 -- 4:00 PM
  • PBS Kids: Sun, May 19, 2013 -- 4:30 AM
  • PBS Kids: Sat, May 18, 2013 -- 10:30 PM
  • PBS Kids: Tue, May 14, 2013 -- 4:30 AM
  • PBS Kids: Mon, May 13, 2013 -- 10:30 PM

Friction (Episode #404)

PBS Kids: Sat, May 11, 2013 -- 4:00 PM

Slippery scientists Mimi, Haley, Tara and Lauren investigate the icy sport of curling. Sara and Rachel get a rise out of engineering a real hovercraft. And Dragonfly TV asks: How can you practice your hockey moves without ice?

Repeat Broadcasts:

  • PBS Kids: Mon, May 13, 2013 -- 4:30 AM
  • PBS Kids: Sun, May 12, 2013 -- 10:30 PM
  • PBS Kids: Sun, May 12, 2013 -- 4:00 PM
  • PBS Kids: Sun, May 12, 2013 -- 4:30 AM
  • PBS Kids: Sat, May 11, 2013 -- 10:30 PM

Hockey Sticks/Butterfly Wings (Episode #702Z)

PBS Kids: Wed, May 8, 2013 -- 4:00 PM

Hockey Sticks - Nicholas and Jordan love hockey. They know that carbon nanotubes are used in some hockey sticks, but aren't sure how the tiny structures change the equipment. They head to Boston's Museum of Science to learn more about carbon nanotubes. Then, they put their sticks to the test on the ice. Finally, with help from scientists at Harvard University, they compare the tensile strength of the sticks and use powerful microscopes to "see" carbon nanotubes. Butterfly Wings - Emily and Julie check out the Magic Wings Butterfly House at the Museum of Life and Science in Durham. They wonder why butterfly wings are so colorful. They learn that iridescence in some butterfly wings - like the iridescence of soap bubbles - results from their structure. At Duke University, the girls learn how to determine whether colors in wings are the result of pigment or nanoscale structures. They test butterfly wings and learn that blue iridescence is due to structure, not pigment.

Repeat Broadcasts:

  • PBS Kids: Thu, May 9, 2013 -- 4:30 AM
  • PBS Kids: Wed, May 8, 2013 -- 10:30 PM

Los Angeles (Episode #503)

PBS Kids: Tue, May 7, 2013 -- 4:00 PM

Milan and Harison go deep, comparing bottom feeders at the Long Beach Aquarium of the Pacific to those in the wild. While at the California Science Center's Big Lab, Max and Brian create model sailboats and the set sail in the Pacific to determine the most efficient design. And Dragonfly TV heads to the La Brea Tar Pits to check out the Ice Age inhabitants of L.A.

Repeat Broadcasts:

  • PBS Kids: Wed, May 8, 2013 -- 4:30 AM
  • PBS Kids: Tue, May 7, 2013 -- 10:30 PM

Friction (Episode #404)

PBS Kids: Mon, May 6, 2013 -- 4:00 PM

Slippery scientists Mimi, Haley, Tara and Lauren investigate the icy sport of curling. Sara and Rachel get a rise out of engineering a real hovercraft. And Dragonfly TV asks: How can you practice your hockey moves without ice?

Repeat Broadcasts:

  • PBS Kids: Mon, May 13, 2013 -- 4:30 AM
  • PBS Kids: Sun, May 12, 2013 -- 10:30 PM
  • PBS Kids: Sun, May 12, 2013 -- 4:00 PM
  • PBS Kids: Sun, May 12, 2013 -- 4:30 AM
  • PBS Kids: Sat, May 11, 2013 -- 10:30 PM
  • PBS Kids: Tue, May 7, 2013 -- 4:30 AM
  • PBS Kids: Mon, May 6, 2013 -- 10:30 PM

Animal Behavior (Episode #403)

PBS Kids: Sat, May 4, 2013 -- 4:00 PM

Jerika and Shannon hop to it and explore which rabbits are the best athletes. Robyn and Alex dive into a sea lion investigation. And: Which sport keeps bears healthy and happy?

Repeat Broadcasts:

  • PBS Kids: Mon, May 6, 2013 -- 4:30 AM
  • PBS Kids: Sun, May 5, 2013 -- 10:30 PM
  • PBS Kids: Sun, May 5, 2013 -- 4:00 PM
  • PBS Kids: Sun, May 5, 2013 -- 4:30 AM
  • PBS Kids: Sat, May 4, 2013 -- 10:30 PM

What's Nano?/Where's Nano? (Episode #701Z)

PBS Kids: Wed, May 1, 2013 -- 4:00 PM

* What's Nano? Ebony and Jasmine catch the Amazing Nano Brothers Juggling Show at Museum of Science in Boston. The show gets them thinking, "How big is a billion? And how small is a billionth?" They search Boston for examples of a billion. Then they visit laboratories at Harvard University to find examples of nanoscale objects on their quest to "see" a nanometer.
* Where's Nano? Regina, Linda, Harrison, Jared, Lorenz, and Randi, visit the "Zoom In" exhibit at the Morehead Planetarium and Science Center in Chapel Hill. They wonder what examples of nanoscale science and technology they can find in their everyday lives. Their nano "scavenger hunt" takes them to the University of North Carolina Chapel Hill, where a scientist helps them print images of nanoscale structures. The kids then create a visual representation of their findings to display at the science center.

Repeat Broadcasts:

  • PBS Kids: Thu, May 2, 2013 -- 4:30 AM
  • PBS Kids: Wed, May 1, 2013 -- 10:30 PM

Dallas & Fort Worth (Episode #502)

PBS Kids: Wed, May 1, 2013 -- 4:30 AM

Fossil detectives Brandy and Ashley discover that not everything about dinosaurs-even Texas-sized ones-is gigantic when they dig for microfossils with the Fort Worth Museum of Science and History. Reed and Nick get game at The Science Place in Dallas, answering the question: so just where is the "sweet spot" on my bat? And in the Science Secret, Dragonfly TV uncovers a very clever pesticide at Discovery Gardens, a certified organic public garden.

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TV Technical Issues

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    • Scheduled Maintenance 8/21-8/25

      Next week, Sutro Tower will be switching most stations to their auxiliary antennas. KQED TV will be at half power on the lower auxiliary antenna, this will affect some of our Over The Air viewers. Maintenance is scheduled on August 21-25 from 9am through 4pm daily. Thank you for your patience!

    • 6/22-23 Ch9 & Ch54 Virtual ID issues

      (DT9-1 thru 9-3, and DT54-1 thru 54-5) KQED experienced a major technical issue with our Virtual ID info in our signals for DT9 and DT54, beginning apx 4pm Thursday 6/22, which was resolved apx 11am Friday 6/23. As background, almost every TV station in the Bay Area now transmits on a frequency which is different […]

    • 2/22/17: Fremont Peak tower transmissions, including KQET DT25

      (DT25.1 through 25.3) Recent storms have taken out dozens of trees on Fremont Peak, which in turn have taken down power lines leading to the transmission tower located on the peak. It has been running on generators for several days, and regular trips are scheduled to re-fuel those generators with gas. However, the truck has […]

To view previous issues and how they were resolved, go to our TV Technical Issues page.

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